Offroad Trailblazers and Envoys

the engine has lost its power

Something not working right?

by GiedriusZ » Sat Feb 09, 2019 10:09 am

Hello,

the engine has lost its power. when I start driving. The machine ran very reluctantly, it seems to pull a heavy trailer.Before that, everything was fine and the machine ran great.Then, when you are driving at a higher speed, you will not feel such a lack of power. Maybe someone has any thoughts on what could be. The OBD shows such errors.
P0495
P0172
P0304
P0440
P0756
P0493
Giedrius, Lithuania
------------------
Chevy Trailblazer LTZ, 4x4
User avatar
GiedriusZ
Cruiser
 
Posts: 26
Joined: Wed Mar 14, 2018 5:01 pm
Name: Giedrius
Vehicle Year: 2003
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ G80

by GiedriusZ » Sat Feb 09, 2019 1:54 pm

in addition, I went through various gearbox modes. Think maybe not in the engine, but in the gearbox. When I start driving "D" mode. The engine rises to 2100rpm and no more rises, the car starts to slow down and accelerates very slowly. The situation is similar to that of the "3" gearbox. But if I turn on the gearbox to help "1", the machine starts to run much better, practically the same as before in the "D" position. In the "2" position, the car also runs in a similar way to "1".
Giedrius, Lithuania
------------------
Chevy Trailblazer LTZ, 4x4
User avatar
GiedriusZ
Cruiser
 
Posts: 26
Joined: Wed Mar 14, 2018 5:01 pm
Name: Giedrius
Vehicle Year: 2003
Vehicle: Chevrolet TrailBlazer
DriveTrain: 4WD w/ G80


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